I think I was one of the first people to bring these drives to the attention of the forum when I found quite a few going for ~$300 around 1/2015. At the time that price was rather amazing for a 1TB enterprise grade drive. Demand for the drives increased and getting them for under $350-$400 was difficult. At the time most of the drives I was receiving had some HP branding and limited SMART data, but even the drives marked as used had a few GB written to them. As vendor specific drives I don't think I received any with SV843 marked on the drive, model numbers changed slightly depending on the vendor and a few months later many of the deals I found for SV843s turned out to be TLC drives (PM853 I believe). I'm sure the PM853 is a decent drive, but it is read focused with half the endurance. At one point in early 2015 I purchased 4 SV843s for under $1000 from a newer ebay seller with positive reviews until then (PM me if you want more info) and ended up receiving the TLC drives. Given the price and being under $0.25/GB in early 2015 I probably should have resold them properly labeled and made a profit. Returning the drives was a hassle as the seller didn't seem to understand or claimed not to understand the differences between MLC and TLC. Regardless, the model number in the heading and post didn't match what was printed on the drive.
Compared to most SATA drives (especially consumer) I still think they are worth $300 or more in a close to new state.
STH did a quick review of a SV843 with normal 7% OP and concluded with "Overall, Samsung SV843 SSD performed very well in our tests, and proved to be faster than many of the competitive offerings we compare the drive against."
The specs differ slightly in some documentation, but supposedly these are the same as Samsung 845DC Pros when OP'd to 28%. The 845DC Pro has an endurance of 14.6PB and outperformed the S3700 in many/most benchmarks. The 845DC Pro still seems to be very highly regarded for a SATA drive.
I personally still have 4 of these that have served many purposes over the last 1.5 years. I used them in RAID10 to host VMs, RAID Z2 for quick bulk storage and even have 1 in a laptop now. No complaints here and I'm tempted to purchase more at this price. The only things holding me back is the progression and dropping prices of NVME drives, picking up new 400GB SLC dual port SAS2 drives rated for 25DWD for under $200 (Sandisk Lightning Ultra Gen II) and that I don't know what to do with many of the 20-30 enterprise grade (240-480GB) SATA SSDs I already have. I consider them peers to the 800GB Intel S3700s going for $200.
The NVME and SAS drives obviously serve different purposes and the only platters I have in use are for offline backup/ collocation. It's nice peace of mind that, in addition to RAID, I have 2+ encrypted offline copies of my "important" data (1 close by and 1 that is often a month or two out of date, but far enough away to be safe from tornadoes or Godzilla attacks). I have cloud backups of a few things that seem especially important or might be critical when I'm travelling. I am probably paranoid as I have more redundancy than a major financial company I worked for and most businesses I know. After losing personal data a few times and watching employers and clients lose data it isn't worth the time or worry to sell the platters. I've been meaning to sell a lot of my "small" (240-480GB SATA SSD's), but I hate selling on ebay.
Anyway, if you're in the market for ~1TB SATA drives these are a steal. Consider over-provisioning them to ~28% and using them in servers, workstations, workstation grade laptops or any laptop when battery life is not a primary concern.
